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CVE-2025-38087— net/sched: fix use-after-free in taprio_dev_notifier

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于taprio_dev_notifier中缺少RCU读取端临界区，可能导致释放后重用。

CVSS 7.8 · High EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1205.001 · Port Knocking

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux fed87cc6718ad5f80aa739fee3c5979a8b09d3a6< 8c5713ce1ced75f9e9ed5c642ea3d2ba06ead69c affected
fed87cc6718ad5f80aa739fee3c5979a8b09d3a6< 8a008c89e5e5c5332e4c0a33d707db9ddd529f8a affected
fed87cc6718ad5f80aa739fee3c5979a8b09d3a6< b1547d28ba468bc3b88764efd13e4319bab63be8 affected
fed87cc6718ad5f80aa739fee3c5979a8b09d3a6< b160766e26d4e2e2d6fe2294e0b02f92baefcec5 affected
6.3 affected
< 6.3 unaffected
6.6.95≤ 6.6.* unaffected
6.12.35≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2025-38087

Vulnerability Information
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Vulnerability Title
net/sched: fix use-after-free in taprio_dev_notifier
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/sched: fix use-after-free in taprio_dev_notifier Since taprio’s taprio_dev_notifier() isn’t protected by an RCU read-side critical section, a race with advance_sched() can lead to a use-after-free. Adding rcu_read_lock() inside taprio_dev_notifier() prevents this.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于taprio_dev_notifier中缺少RCU读取端临界区，可能导致释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux fed87cc6718ad5f80aa739fee3c5979a8b09d3a6 ~ 8c5713ce1ced75f9e9ed5c642ea3d2ba06ead69c -
Linux Linux 6.3 -

II. Public POCs for CVE-2025-38087

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III. Intelligence Information for CVE-2025-38087

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Same Patch Batch · Linux · 2025-06-30 · 4 CVEs total

CVE-2025-38089 9.8 CRITICAL sunrpc: handle SVC_GARBAGE during svc auth processing as auth error
CVE-2025-38090 7.8 HIGH drivers/rapidio/rio_cm.c: prevent possible heap overwrite
CVE-2025-38088 powerpc/powernv/memtrace: Fix out of bounds issue in memtrace mmap

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38087

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